Answer:
write the repeating number with 9 in the denominator
Step-by-step explanation:
Just write the repeating number over 9
i.e.
- 0.11111111... = 1/9
- 7.22222222... = 7 2/9 or 65/9
- 1234.555555... = 1234 5/9 or 11111/9
- etc.
Twice a number can be written as 2n.
Four times the number can be written as 4n.
If the sum of 2n and 4n equals 54, then:
6n = 54
Divide both sides by 6 to solve for n:
n = 9
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Let a and b be the numbers,then a+b=32,b=32-a
ab=-320
a(32-a)=-320
32a-a^2=-320
a^2-32a-320=0
a^2-40a+8a-320=0
a(a-40)+8(a-40)=0
(a-40)(a+8)=0
a=40 or-8
when a=40,b=32-40=-8
when a=-8,b=32-(-8)=32+8=40
so numbers are 40 and -8
